C++ Standard Library's Fifteen-Year Evolution Away from std::function

Summary

The article discusses how the C++ standard library has been deprecating std::function in favor of newer, more efficient callable wrappers over the past fifteen years. Sandor Dargo's post on std::copyable_function (coming in C++26) highlights that std::function is now considered legacy and should be avoided in new code. The article examines the evolution of C++ standard library design decisions, showing how the committee has been iteratively replacing earlier designs with better alternatives, with public records of these changes available for scrutiny.